On Mon, 19 Dec 2011, David Aspinall wrote:
Dear PG developers,
We're considering a change of license for Proof General (Emacs) from GPL
to a BSD-style license (probably the Modified BSD). The main reason for
a change to a more permissive license is so that colleagues at MSR and
elsewhere can collaborate more easily with us.
I don't mind either way. BSD-style licensing might give some people the
warm feeling that they could in principle produce a closed version, but
this is rather theoretical in practice, since there are always
dependencies on GPL components.
Makarius
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